<template>
    <div class="login_container">
        <!-- 登录块 -->
        <div class="login_box">
            <!-- 头像 -->
            <div class="avatar_box">
                <img src="../assets/logo.png"/>
            </div>
            <!-- 表单区域 -->
            <el-form ref="loginFormRef" :model="loginForm" :rules="loginRules" class="login_form" label-width="0">
                <!-- 用户名 -->
                <el-form-item prop="username">
                    <el-input v-model="loginForm.username" prefix-icon="iconfont icon-denglu"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password">
                    <el-input v-model="loginForm.password" prefix-icon="iconfont icon-mima" type="password"></el-input>
                </el-form-item>
                <!-- 按钮 -->
                <el-form-item class="btns">
                    <el-button type="primary" @click="login()">登录</el-button>
                    <el-button type="info" @click="resetLoginForm()">重置</el-button>                
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>
<script>
export default{
    data(){
        return{
            // 表单数据
            loginForm:{
                username:"admin",
                password:"123456"
            },
            // 验证对象
            loginRules:{
                // 校验用户名
                username:[
                    { required: true, message: '用户名为必填项', trigger: 'blur' }, // 必填项验证
                    { min: 5, max: 12, message: '长度在 5 到 12 个字符', trigger: 'blur' } // 长度验证
                ],
                // 校验密码
                password:[
                    { required: true, message: '用户密码为必填项', trigger: 'blur' }, // 必填项验证
                    { min: 6, max: 10, message: '长度在 6 到 10 个字符', trigger: 'blur' } // 长度验证
                ],
            },
        }
    },
    methods :{
        // 重置按钮
        resetLoginForm(){
            this.$refs.loginFormRef.resetFields();
        },
        login(){
            //先验证校验规则
            this.$refs.loginFormRef.validate(async valid => {
                if(!valid){
                    return ;// 验证失败
                }
                const {data:res} = await this.$http.post("login",this.loginForm);// 访问后台
                if(res.flag == "ok"){
                    this.$message.success("操作成功");// 信息提示
                    this.$router.push({path:"/home"});// 页面路由跳转
                    window.sessionStorage.setItem("user",res.user);
                }else{
                    this.$message.error("操作失败");// 错误提示
                }
            })
        },
    },
}
</script>
<style lang="less" scoped>
// 根节点颜色
.login_container{
    background-color: #2b4b6b;
    height: 100%;
}
.login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    .avatar_box{
        width: 130px;
        height: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 5px;
        box-shadow: 0 0 2px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%,-50%);
        background-color: #0ee;
        img{
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;
        }
    }
    .btns{
        display: flex;
        justify-content: flex-end;
    }
    .login_form{
        position: absolute;
        bottom: 0%;
        width: 100%;
        padding: 0 10px;
        box-sizing: border-box;
    }
}
</style>